Unfortunately, where Evo contracts are concerned @Coehide as you are taking out a new credit agreement for the device Vodafone will credit check you each time. There is further information here: Credit Checks . If you have failed the check it would be worth appealing the decision by completing and submitting this form Credit Check Appeal Form
Looking back at your previous threads I notice you had a problem with the credit check and Advantage discount last year on this thread Trying to upgrade and live chat liar - Community home (vodafone.co.uk) although you certainly didn't receive any replies.
Apart from upgrading with Vodafone, depending on the phone you are wanting take a look at third party sites and offers and credit arrangements direct from the manufacturer.
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